pdfcosmos

Booklet PDF

Turn a PDF into a fold-and-staple booklet, all in your browser.

Free, fast, and privacy-first.

Make a booklet from your PDF

or drag & drop files here

PDF files onlyone file at a timeup to 100 MB each

Make a printable booklet from a PDF, free, in your browser

Turn any PDF into a print-ready booklet: pages are reordered into printer spreads and placed two-up on landscape sheets, so printing double-sided and folding once gives a booklet that reads in order. It all runs on your device, and nothing is uploaded.

Choose left or right binding, and let the tool pad the page count to a multiple of four with blanks. Then print double-sided (flip on the short edge) and fold.

  • True saddle-stitch order

    Fold once and it reads correctly, front to back.

  • Auto page padding

    Rounds up to a multiple of four with blank pages.

  • Left or right binding

    Supports left-to-right and right-to-left documents.

  • Private by design

    Imposed in your browser. Nothing is uploaded.

How to make a booklet from a PDF

  1. Add your PDF

    Click “Add PDF”, or drag a single file into the upload area.

  2. Choose the binding

    Left binding for left-to-right languages, right binding for right-to-left.

  3. Create & print

    Click “Create booklet”, download the imposed PDF, then print double-sided and fold in half.

Frequently asked questions

Are my PDF files uploaded to a server?
No. The imposition happens entirely in your browser (pdf-lib). Your file never leaves your device. You can confirm it in your browser's Network tab.
How do I print the booklet?
Print the downloaded PDF double-sided (flip on the short edge), then fold the whole stack in half. The pages are already ordered so the folded booklet reads correctly.
What if my PDF's page count isn't a multiple of 4?
Blank pages are added at the end automatically so the sheets fold cleanly. Booklets always come in multiples of four pages.
What page size does the booklet use?
Each sheet is a landscape pair of your source page size (two source pages side by side), so a document of A5 pages images two-up onto A4-landscape-sized sheets. The content keeps its proportions.
Is Booklet PDF free?
Yes, it's completely free to use, with no sign-up and nothing to install.